As far as I know, these compounds are dealing with four arrays. Matrix array of static kine states (reference poses), matrix array of actual transforms, scalar array of weights, integer array of assigned indices. Last two should be created by something else, by weighting part of SI envelope operator, or some another ICE compound.anhungxadieu wrote:i have a project, and i want to try a envelope by point cloud, i know Dual quaternion compound can do it but i don't know how to find exactly deformer id in order to have same envelope weight.
First two, usually are coming from SI group, where group has to match the data in envelope operator, by order and size of group - if not, you use 'select deformer from envelope' command, and create a new group.
So, to replace values of first two, you use something like 'get array indices' ICE node, plug this into 'ID to location', location is your point cloud. You can also build just an new array of same size as group (for ICE, group is an array, as long as all members have some common attribute, let's say kine.global).
On point cloud side, you'll want to create custom matrix attributes, for static kine state and actual transforms. For example, just by converting the SRT into 4x4 matrix.
. Now serously, if you're making a system like body rig, hair system or so, imho most important is to get feedback of skilled artist, to get a picture, what to add or remove. Let's say, you're working as TD somewhere. If not... from my knowledge, only place on planet earth, where it was possible to get an skilled artist, ready to play with something created with visual programming system like ICE - it was Softimage community in times of what I'd call 'Golden ICE Age' around 2009 - 2012. In Houdini crowd, everyone seems to be an author, artists are rare animals, especially skilled ones.